What is the primary function of a fire damper?

The primary function of a fire damper is to control fire and smoke spread through ductwork. Fire dampers are installed in duct systems and are designed to automatically close in the event of a fire, effectively sealing off the duct and preventing flames and smoke from traveling to other parts of a building. This containment is crucial in maintaining the integrity of fire-rated walls and ceilings, thereby aiding in the overall safety of the structure and its occupants.

By controlling the movement of fire and smoke, fire dampers contribute significantly to the effectiveness of fire protection and life safety measures within buildings. This ensures that areas remain clear for occupants to evacuate safely and that fire services can respond without being hindered by rapidly spreading fire and smoke.

The other options, while related to fire safety, do not accurately describe the specific role of a fire damper. For instance, extinguishing fires quickly is the job of fire suppression systems, structural support pertains to fire-resistant building materials and construction methods, and signaling alarms is the function of alarm systems designed to alert occupants and fire services during a fire incident. Each of these systems plays a vital role in fire safety, but they serve different purposes than that of a fire damper.